Sidewall portion of an automobile tire



FIG. 1 is a front view of a sidewall portion of an automobile tire according to my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a fragmentary enlarged right side view thereof; and,

FIG. 6 is an end view taken along line 6-6- in FIG. 5 thereof.

Broken lines in the drawing figures are used to show portions of the tire that are not being claimed, and thus form no part of the claimed invention. 

CLAIM The ornamental design for a sidewall portion of an automobile tire, as shown and described. 